18. If the striker miss the ball he ought to play at and strike another ball and pocket it, he loses a life, and his ball must be taken off the table, and both balls must remain in hand until it be their turn to play.
19. Fouls are also made thus: striking a ball twice with the cue, lifting both feet from the floor when striking; touching another ball, either in the
act of striking or before the balls have become stationary, the penalty being that the player cannot take a life.
20. If the player, either in taking aim or in any manner whatever, except when in hand, touch his own ball, it is a foul. If the striker pocket a ball by a foul stroke, the owner of that ball does not lose a life, but the ball remains in hand until it is his turn to play.
21. If the striker's ball touch the one he has to play at, he is at liberty either to play at it or at any other ball on the table; and he may take a life by pocketing any balls so played on.
22. If a ball or balls touch the striker's ball, or be in line between it and the ball he has to play at, so as to prevent him hitting any part of the object ball he wishes, it or they, whether nearer to the striker's ball than the object ball or not, may be taken up until the stroke has been played; and after the balls have ceased running those taken up must be replaced, but a ball cannot be taken up in order to strike a ball from off a cushion, except in the case of Rule 24.
23. If the ball or balls be in the way of a striker, or the striker's cue, so that he cannot play at his ball without a reasonable chance of making a foul, he can have them taken up.
24. If the corner of the cushion prevent the striker from playing in a direct line, he can have any ball removed for the purpose of playing at a cushion first, or he may have the ball moved out a few inches, but cannot then take a life. If, however, only two players be left in, as in Rule 32, the ball cannot be moved out.
25. If the striker have a ball removed, and any other than the next player's ball stop on the spot it occupied, the ball removed must remain in hand till the one on its place be played, unless it should happen to be the turn of the one removed to play before the one on its place; in which case that ball must give place to the one originally taken up; after which it must be replaced. If two balls were taken up from the same spot, the one last taken up has to be replaced first.